动词buckle的现在分词
They chatted idly for a few moments, then each buckled down to work. 他们闲聊了一会儿; 然后各人集中精神干活。
She's really buckling down to her new job. 她埋头苦干做新工作。
adj.恃强凌弱的；虚张声势的
动词swashbuckle的现在分词形式.
